Water-supplying attachment for rock-drilling machines.



No. 872,996. A PATENTBD DEC. 3, 1907. H. HBLLMAN L L. G. -BAYLES. PPLYING ATTACHMENT FORROCK DRTLLING MACHINES.

WATER su APPLICATION FILED JULY124. 1906.

muren srATEs PATENT cierren.

ianlvmr` nnimnw Ann'tnwis ooN'mci BAYLEs'oF JonANNEsBURG, TRANSVAAL.

" WATER-,surname ATTAemuENT Fon 'ROCK-BILLING MACHINES.

No. s725996.

gpeeication of Letters Patent.

Patented nec. -3, i907.

Original application iiled July IAl2. 1905 Serial N o. 2.69.4051.l Divided and this application filed July' 24. 1906. Serial No. 327,470.

To all whom it may concern:

Be it known that we, HENRY HELLMAN and Lewis1V CoNDic'r Blwulzs,v citizens of the United States,4 and residentsof Johannesburg, Transvaal, have invented certaingnew and useful Improvements in Tater-Supply- Aing Attachmentsv for Rock Drilling Machines, of tibn. Y

This invention has refercnceto rock-drilling machines or engines and to means or contri-varices for supplying water, .preferably combined with a quantity of the actuating gaseous.fluid,'through the drill orbit to the cutting lextremity thereof, said actuating 1 which the following isa. specifica- -lluid preferably serving as the .means for drawing and conveying the water through Itis designed with theobject of preventing the diffusion of the rock-drill dust or minute particles of rock into the surrounding atmosphere, which is responsible for the high rateof mortality among rock-i drill operaltors. 'Although this is the primary objectl of the invention `other important advantages accrue to the use ofthe invention, as byA washing out-the cuttings of the drilling or boring tool it is found that the efhciency of the drill is materially increased, that the tooldoes .not so readily lose its edge andthat the .drilling is performed, with increased .speed -The object of th'epresent invention is to provide simple and compact means which are preferably permanently, attached to themachine or engine so that the changing ofthe drills or bits is not impeded. y 'The present improvement'isjahdivisionof in application filed by us on the 12th July,- 10W), under official Serial Number269405.-

We will at once proceed with a detailed description of the invention by aid of the accompanying sheet of drawings, in which* Figure 1 is an elevation ofa rock-drilling macbine, withthe invention japplied thereto; Fig. 2 is a longitudinal section of a ortion of said machine, drawn to an enlarge( scale;I Fig. 3 `isa transverse section of Fig. 2,-on the line Fig. 4 is a transverse section of 3J on the line 'gf-y.

ln the drawing 1 designates the outer oylindrical` protectivecasing of the machine in' which the power cylinder 2 is slidingly and rotatively mounted. The power cylinder 2 is constructed with a forward extension or front head 3 '1 for carrying the drill steel.

The casing 1 is shown' carried or supported by means of the sleeve or clamp 3 for fixing it to an ordinary column clamp or other suitable su port. The sleeve or band 3 .is shown severed? or split, one of the ends being con structed with a-bifurcation or with the two projections 5, 6, and .the other with apro- ]ection. 7 fitting into said bifurcation. The ends of the part 7 and the two parts 5, 6, are turned up in the form ofhooks and between -th'em is inserted a tapered key S which when driven in one direction forces the part 7 into the bifurcation formed between the parts 5, 6 and so securely binds the sleeve or band 3 round the' protective casing 1. The casing 1 may be adjusted longitudinally of the band sired -to advance or recede the' machine in relationto the rock face orpoint at which fit is desiredv tooperate u' on.l This feature,- although described, oes not ,constitute a feature'of the present invention but ,forms` the subject matter of an application filed -July 24, A1906, SerialNo'. 327469, for Letters Patent of the United States. Y

The protecting casingl at the forward end is constructed of 'approximately the same internal diameter as the external diameter of the power cylinder 2 so that the power cylinder is capable of sliding freely backwards and forwards through its bearing in this end of the casing 1. V

The power cylinder 2 is at its Vforward end shown constructedwith. an external screwthread round a reduced .portion 2b. .Over this portion is screwed the front head or the member which constitutes a-forward extension ofpower cylinder-2'. The forward extension or front head2() is constructed with a hole 13 of square or other polygonal cross section, and at the rear of the hole-13 with a cylindrical cavity 13a. ln the forward endv ofthe power cylinder 2 is located an impact piece 9 which serves to receive the impacts ol'- the powefi piston 10 or reciprocating percussive vmember and to transmit the same to the drill bit or boring tool 12. The impact piece Qin its rearrportion is made a sliding lit in the bore'othe power cylinder 2 and inits front portie/n is made somewhat larger and a sliding fit in the cylindrical cavity 13a in the rear end of the forward extension or front head 29. The cavity 13u in the front head 29 bcing of greater diameter than the bore of the cylinder 2 forms an abutment or shoulder 30 for the enlarged f/ront portion of the impact orbit 12 is made of the same shape in transverse section as the transverse section of the hole 13 in the front head 29 so that it may shde longitudinally thereofbut is compelled to rotate with it.H A hole 28 is formed longitudmallyof the drill steel' along which the a1r and water is conductedto the cutting extrenutyof said bit, which converts the comminuted rock. or cuttings into slud e and prevents it emanating from the bore ole inv .the form of dust.

A. small hole 9* is formed longitudinally of the impact piece 9 through which a uantity of the actuating fluid may pass from t e front end of thepower cylinder 2l Lto assist in forcing the water through the steel 12 and ejecting the cuttings'from the bottom of the ho'le being drilled. l pact piece 9 is formed a hole 9b somewhat arger 1n diameter than the hole 9a which lteads into. or communicates with it at the bot- -Round .the enlarged part of the impact rece 9 is formedan annuler groove 15 and from the annular groove portsor passages 26j are formed communicating .with the hole 9b at or near the bottom -or at'the point where the hole 9 opens .into it. passages 26 are as shown referably angular-ly disposed in relation tot e longitudinal axis of the impact piece 9 and inchned -in a forward-direction from the annular groove 15 to the hole 9b. The ports 26serve as the water ducts along which the water passes from the annular groove 15 to the hole 9b and from the tlatter along the coincident hole 28 in the drill 'steel 12. `The actuating gaseous fluid assing along the hole 9e as-it enters the ho e 9b expands, and by tending to create avacuum in the water ducts 26 draws the water by suction and conveys it along the hole A28 in the drill steel 12 to the cutting extremity thereof.

Ina recess formed around the forwarder:- tension or front head 29 is arranged a swivel ring 17. This swivel ring 17 on the one side rests against a shoulder 29a formed by an 1 abutment on thev front head 29 and on the other side is held in position by means of a nut`31 and lock-nut 32 screwed over the` front head-29. structcd with aninternal-annular groove or recess 19 and through the front head 29 arcformed holes 16 which place said annular groove 19 in communication with the annular groove 15 in the impact piece 9. As the impact piece 9 has alimited movement insido the front head 29, drill steel 12 forward) the annular groove 15 is made sulliciently wide to remain in communication with the ports 16 in the front head 29 at any position said impact piece 9 may assume in the front head 29. y

ln a hole in the swivel ring 17 which communicates with the annular groove 19 is arby mean:

In the front end of the im.--

TheseA ports orv The swivel ring 17 is con.

(when it pushes the4 ranged a hose stem 21 formed with a head or enlargement 33 at the inner end. The stem 21 is attached to the swivel ring 17 by means of the screw plug 34. To the outer extremity of the stem'21 is attached a hosepipe 24 of the hose clamp 25. This construction provides. a convenient detachable `connectioiJ hetween the hose -24 and swivel 17 and obvfates the defects of the previous construction. of such devices. The hosepi e 24 may lead to any source of water suppy from which th.` water will be drawn by suction or forced by pressure-into the swivel ring 17 and from the latter through the impact piece 9 to the drill steel 12.

lVhat we claim as our invention and desire to protect by Letters Patent is z- 1. In a rock-drilling machine or engine, in

combination, a cylinder, a swivel mounted on-the front end thereof, a drill steel slidably and iron-rotatably positioned inthe front end of the cylinder, and formed with a longitudinal port leading to the cutting end, ports placing the swivel in communication with` said longitudinal hole and means for conducting water to the swivel.

2. In a rock-drilling machine or engine, in combination, a cylinder with a recess formed at the front end thereof, a swivel located in said recess, a drill steel loosely and non-ro-V tatably positioned inthe forward Aend of the cylinder in advance ofthe swivel, means for introducing water to the swivel and ymeans for placin the s wivel in communication with a lo itucIinal hole in the steel.

` 3. n a rock-drilling machine or engine, in combination', a cylinder formed with a recess at the front end thereof, a swivel located. in said. recess, a drill steel loosely and nonro tatably positioned. in the forward end of the cylinder in advance of the swivel, means for' introducing water to the swivel and means for placinr the swivel in communication with a lon yitudinal hole in the steel, and means permitting a quantity of the actuating iiuid to passfrom the cylinder along the drill steel along 'with the water.

4. In a rock-drilling machine or engine, in combination, a cylinder formed with alrecess at thefront end thereof, a swivel mounted within the recess, a drill steel loosely and nonrotatably positioned in the forward end of the cylinder and formed with a longitudinal hole lealug to the cutting end, a reciprof eating percussive member and an impact piece positioned in the front end of the der'and adapted to receive and transmit tlu` impacts of said percussive member to tho drill steel, said' impact piece being formed with ports in communication with the swivel and withnthe longitudinal hole in the steel, and means for introducing waterA into the swivel.

cylin- 5. In a rock-drilling machine 'or engine, in A on the forward end thereof, a drill steel loosely and non-rotatably'positioned in the `forward end of the cylinder formed with a longitudinalhole leading to the cutting end,l a reciprocating percussive member and an impact piece positioned Ain the frontend of *the cylinder and adapted to receive and transmit the l im acts of said percussive member to the -drill stdel, said'impact piece being formed with ports in communication with the swivel andwith a longitudinal hole .coinciding with the longitudinal'hole in the steel along which a quantity of the actuating fluid" may ass with the water to they longitudinal holle in the steel.

6. 'In-a rock-drilling machine or engine, in

combination, va cylinder, a swivel mounted on the front end thereof, meansl forcoi'iduct-V 'ing water to said swivel, a drill steel having a .longitudinal port, said drill steel having a' portion of'lits shank of polygonal crossse tion and fitting a polygonal hole inthe front endof thecy'linder, an impact piece located in the forward end of the cylinder at the rear of the drill steel and having ports lacing the swivel in communication with t e longitudinalh'ole in the drill steel and a'port through -which a quantity of thefactuatingf f iuid 4 ier an.

lpasses to draw the -water and convey it throu h the drill steel, Y v

7. n a rock-drilling machiney or engine,`in combination, a power cylinder carrying-per# cussive apparatus, said cylinder' being constructed with au annular .recess around its forwardfend, aswivelmounted in said recess;

"5 ports placing thecavity between the impact .jpiece andcylinder in communication with 'said' longitudinal hole,a drilllsteel loosely .and non-rotatably positioned in the forward' end of the cylinder and havi a longitudinal hole leadin to the cutting end thereof with whichl the ongitudinal holein the impactV piece communicates..

t 8. In a rock-drilling machine or engine, in

combination, a power cylinder, a-reciprocat ing percussive member therein, the cylinder havin a forward extensionc'arryinga drill lsteel s idingly and non-rotatively positioned therein, ,the steel having a longitudinalv hole leading to the cuttin end to whicha quantity of thejactuating lui is admitted' and means for conducting water to said longitudinal hole.-

9. In a rock-drilling machine or engine, in combination,' a power cylinder, a reciprocatingpercussive member therein, `the cylinder having a forward extension,- a drill steel slidingly and nn-rotatively positioned in said extension, an impact piece at the rear of the drill steel, a swivel fon said extension, means for conductingwater to the swivel., the drill steel having a'longitudinal hole 'leadlingto the cutting end thereof, the 'impact iece having "orts for condructi a-quantity iif the actuating fluid'to the drilll steel and water from'the swivel, and means for introducingv water to the swivel. y

"10'. In a rock-drilling machine or engine, vin combination, .a power cylinder, a casing rotatively mounted, a drill steel operatively carried inthe front end of thepower cylinder, the steel having a longitudinal -hole leading to the cutting end through which a quantity of the* actuating luidmay pass, aswivel ,mounted on the front end ofthepowercylinder,l means for conducting water to the swivelfand'ports placing. the swivel-in coinmunication. with lthe .long'itudi'nalfhole in.

the steel.

i.. 11. In a rock-drilling machine or engine, in combination, a power cylinder,"a "casing in which the power cylinder is rotatively and 'in which Ithe power cylinderisslidingly and"v 8.o

slidingly'mo'unted, a drill steel slidinglyl and nonrotativelypositioned in the frontend of the 'power cylinder, said"steel"having a longitudinal hole leading to the cutting end, an

Airnpa'ct piece positioned in the front endof the power cylinder, a reciprocating percussive member, the impactv piece. serving to receive and transmit the impacts' of Asaid member to -the drill steel, a swivel'mounted on the, front en ii'of` lthe cylinder, ports',

through' the irnpactipiece vfor permitting'a quantity of the actuating Huid to P353 to the steel 'and` foi"V conducting water from the, swivel so that it -is conveyed to the cutting point-ofthe steel by said actuating fluid andV means for .conductingwater to the swivel -and from the latter to the longitudinal port inthe impact piece. 12. ,In a rockdril1ing machinefor'engine,

in cor'nbination, a potver cylinder and a reoiprocating percussive member 'therein,..

casing in4 which the power cylinder is rota'- tively.- aiid slidingly mounted, a ydrillv steel,

h ving a longitudinal hole leading to the ha of polygonal cross` section ittinga tt gVA end thereof and a portion of its hole .of correspondingV section in the front l' end of the Acylinder a'swivel carried bythe.

power'- cylinder, and'rneans for conducting water to said swivel and from the latter tov 'the longitudinal holein the steel.

in combination, a power'cylinder and a ref ciprocatmg percussive membertherein, a

casingin which the ipow'er cylinder is-rota-jv tively and lidingly mounted, a drill `steel ,having a longitudinal hole leading to the cutting end thereof and a portion oits shankist of polygonal cross section fitting a hole of corresponding section in thefrontend of the cylinder, a swivel carried bythe power cylinder, anri'mpact piece positioned 1in Ythe vforward end of rthey power. cylinder at the.

rear'ofthe drill steel,v Asaid. impact-,piece hav-y ing ports which permity a .quantity `of the: actuatingiluid'to pass to the holeQin the.

,drill steel' and ports along whichjwater may `pass from the swivel. to said *longitudinal hole, and means for lconveying Water tol the v swivel.

14. Ina rock-drilling' machine or engine,

in combination, a powercylinder, a caslng rino"y Von theiront headfme'ansfor placing saidv swivel ring mrcommunication with a source of 'liquid su 'iti vely carried by tf nt head and formed with a llongigitudinal hole.` communicating 'with theinteriorpof the cylinder and with l the" swivel ring and "-mns. fol' ollducting water tothe swivel ring," vf 15.111 a ,rock-drilling machine or engine, in combination a'power cylinderand a re-z- `fxvciprocating percussive member therein, a1

"casinggin Whchysaid cylinder is 'rote-tively and' slidingly. mounted', .a fronty head; fined to the vfront "endof the` oivercylind'ei, a

'swiyel ring mounted on t e'front heada'ndI y formingA an annular'eavity'between it and', the front head, means for* placing the swivel t ring in communication with a` sourcel ofl liquid A, supply, a `drill bit tirtool ,slidingly and nonfrotatively 'fitting` the 'front vheed and formed with-a longitudinal hole communicatingjwith the int'eriorofy the cylinder' 40 and leading tothe cutting end, an Vimpact I ,piece,positioned[at the rear end ofV thedrill n steel and "adapted to receive andA transmit in which said cylinder isrotativelyand slid-y 'l ingly mounted, a front head fixed to the- ,iforward end. of said `power cylinder, a swivel plfy,l a 'drill or bit opera' e ro the impacts of the reciprocating percussiie member, saidfimpact ieee being constructed aj'longitudmal l dport Afor Vper- "mittinga `"q'i'nan'itity0i the "actnating'iiuid to pass ,through it to the. longitiidinal 'jliole in thel drill; steeli'and "with 'angular' forwardly inclined 'ports placingitsflongj idinal hole in' communicationx'with'-an a n arr'space formed` between kinfand' 'tlie interior of lthe vfront headand port'siiijthe front headplzicing the cavities betiieen'the" front head land swivel and' front head and impact piecev inl communication. y Y c 16. In a rockdrilling machine or engine, incombniation, a power cylmder, a .casing in which said power cylinder is slidingly' and4 l rotatively carried, 'a swivel piece; carried .on the A front end of the power cylinder a `hose stem .conlstructedlzwith f a 4head-l or enlargement fitting a recessinjsaidswiyelj ani a screwed plilgfcnl retaining said liosefstein in position while permitting it to rotate about fits point-of attachment-tothe sn'iels 17.,Inal rock-drilling machine,ori engine, in' combination, apo'wer cylinder andan l'impact piece', theglatter.'constructed @with it longitudinal' Ofliole permitting f the passage "through itoi"I a quantity'fofg'tlie actuating fluid Vand 'with ports*communicating si'it-h *and conducting' -water to rsaid longitudinal hole; vthe 'longitudinal- E holebeing y inc-1 iscd n in. diameterv forward vl'of the lpoint win ici-th water duct-s comrnicnte Within* f- 1 In witnesswhereof we have he'reunt'oy se t onr'liands" ini the. presencefoi" two subsri hing "jyi f .j f. .it I 

